What does ‘p’ in pH stand for?

Potenz

The correct answer is option 1. Potenz.

The 'p' in pH actually stands for Potenz

While other options might seem related in meaning, here's the breakdown:

Potenz: This is the original German word used by Søren Peder Lauritz Sørensen, the scientist who introduced the pH concept in 1909. Potenz translates to "power" or "concentration" in English. In the context of pH, it refers to the power of hydrogen ions.

Potential: While related to the concept of power, "potential" doesn't directly translate to Potenz and doesn't accurately reflect the mathematical relationship between pH and hydrogen ion concentration.

Pleural: This term refers to the grammatical form of nouns and adjectives, not related to the scientific meaning of pH.

Potencial: This is the Spanish translation of "potential," sharing the same limitations as "potential" mentioned earlier.

Therefore, understanding the historical context and the mathematical basis of pH helps clarify that "Potenz" is the most accurate meaning for the 'p' in this scientific term.